From 4dee46426e6d23adda048414433c2887314a4267 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sat, 18 Feb 2023 23:08:59 +0100 Subject: [PATCH] avcodec/wavarc: Check k Fixes: Assertion failure Fixes: 55849/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WAVARC_fuzzer-6590105973555200 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/wavarc.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavcodec/wavarc.c b/libavcodec/wavarc.c index b626daa66e..8d37af9571 100644 --- a/libavcodec/wavarc.c +++ b/libavcodec/wavarc.c @@ -192,6 +192,8 @@ static int decode_1dif(AVCodecContext *avctx, if (block_type < 4 && block_type >= 0) { k = 1 + (avctx->sample_fmt == AV_SAMPLE_FMT_S16P); k = get_urice(gb, k) + 1; + if (k > 32) + return AVERROR_INVALIDDATA; } switch (block_type) { @@ -282,6 +284,8 @@ static int decode_2slp(AVCodecContext *avctx, if (block_type < 5 && block_type >= 0) { k = 1 + (avctx->sample_fmt == AV_SAMPLE_FMT_S16P); k = get_urice(gb, k) + 1; + if (k > 32) + return AVERROR_INVALIDDATA; } switch (block_type) {